Can farmers get away with making a single herbicide application on their corn crop, or should they utilize a two-pass herbicide application across the field? Ben Wiegmann, Beck’s Hybrids Field Sales Agronomist, discusses one-pass herbicide programs versus two-pass herbicide programs on corn. Watch this video to learn how to make a one-pass system work and what specific chemistries help make weed control effective on the corn crop. Nine different herbicide treatments were tested in this study: two treatments in a one-pass system, and seven treatments in a two-pass system.

Treatments

One-Pass System

1. 80 oz. Acuron^® (Site of Action (SOA) Groups 5 + 15 + 27 + 27)
2. 5.6 oz. Corvus^® (SOA Groups 2 + 5 + 27) + Atrazine

Two-Pass System

1. 40 oz. Acuron^® followed by (fb) 40 oz. Acuron^® + Roundup PowerMAX^®
2. 51.2 oz. Bicep II Magnum^® (SOA Groups 5 + 15) + Atrazine fb Roundup PowerMAX^® + Atrazine
3. 51.2 oz. Bicep II Magnum^® + Atrazine fb Roundup PowerMAX® + Laudis^® + Atrazine
4. 96.0 oz. Lexar^® EZ (SOA Groups 5, 15, 27) fb RoundUp PowerMax + Atrazine
5. 13.0 oz. Verdict^® (SOA Groups 14 + 15 + 5) fb Roundup PowerMAX^® + Atrazine
6. 13.0 oz. Verdict^® fb Roundup PowerMAX^® + Laudis^® + Atrazine
7. 3.5 oz. Corvus^® + Atrazine fb Capreno^® + Atrazine + Roundup PowerMAX^®